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Loading phase and displacement of Mystrium mandibles prior to a strike. (a) Still images from high-speed video of the loading phase of a strike displaying the mandible in an unloaded (top) and loaded (bottom) state. Dots indicate the fixed landmarks (yellow) and semi-landmarks (white) used in two-dimensional geometric morphometric analysis. (b) Loaded finite-element model of striking mandible. Colours correspond to the amount of displacement of each brick element. Scale bar = 0.5 mm.
